---
_id: '13197'
abstract:
- lang: eng
  text: "Nominally identical materials exchange net electric charge during contact
    through a mechanism that is still debated. ‘Mosaic models’, in which surfaces
    are presumed to consist of a random patchwork of microscopic donor/acceptor sites,
    offer an appealing explanation for this phenomenon. However, recent experiments
    have shown that global differences persist even between same-material samples,
    which the standard mosaic framework does not account for. Here, we expand the
    mosaic framework by incorporating global differences in the densities of donor/acceptor
    sites. We develop\r\nan analytical model, backed by numerical simulations, that
    smoothly connects the global and deterministic charge transfer of different materials
    to the local and stochastic mosaic picture normally associated with identical
    materials. Going further, we extend our model to explain the effect of contact
    asymmetries during sliding, providing a plausible explanation for reversal of
    charging sign that has been observed experimentally."
acknowledgement: "This project has received funding from the European Research Council
  Grant Agreement No. 949120 and from\r\nthe European Union’s Horizon 2020 research
  and innovation program under the Marie Sklodowska-Curie Grant\r\nAgreement No. 754411. "
article_number: '065601'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Galien M
  full_name: Grosjean, Galien M
  id: 0C5FDA4A-9CF6-11E9-8939-FF05E6697425
  last_name: Grosjean
  orcid: 0000-0001-5154-417X
- first_name: Scott R
  full_name: Waitukaitis, Scott R
  id: 3A1FFC16-F248-11E8-B48F-1D18A9856A87
  last_name: Waitukaitis
  orcid: 0000-0002-2299-3176
citation:
  ama: 'Grosjean GM, Waitukaitis SR. Asymmetries in triboelectric charging: Generalizing
    mosaic models to different-material samples and sliding contacts. <i>Physical
    Review Materials</i>. 2023;7(6). doi:<a href="https://doi.org/10.1103/physrevmaterials.7.065601">10.1103/physrevmaterials.7.065601</a>'
  apa: 'Grosjean, G. M., &#38; Waitukaitis, S. R. (2023). Asymmetries in triboelectric
    charging: Generalizing mosaic models to different-material samples and sliding
    contacts. <i>Physical Review Materials</i>. American Physical Society. <a href="https://doi.org/10.1103/physrevmaterials.7.065601">https://doi.org/10.1103/physrevmaterials.7.065601</a>'
  chicago: 'Grosjean, Galien M, and Scott R Waitukaitis. “Asymmetries in Triboelectric
    Charging: Generalizing Mosaic Models to Different-Material Samples and Sliding
    Contacts.” <i>Physical Review Materials</i>. American Physical Society, 2023.
    <a href="https://doi.org/10.1103/physrevmaterials.7.065601">https://doi.org/10.1103/physrevmaterials.7.065601</a>.'
  ieee: 'G. M. Grosjean and S. R. Waitukaitis, “Asymmetries in triboelectric charging:
    Generalizing mosaic models to different-material samples and sliding contacts,”
    <i>Physical Review Materials</i>, vol. 7, no. 6. American Physical Society, 2023.'
  ista: 'Grosjean GM, Waitukaitis SR. 2023. Asymmetries in triboelectric charging:
    Generalizing mosaic models to different-material samples and sliding contacts.
    Physical Review Materials. 7(6), 065601.'
  mla: 'Grosjean, Galien M., and Scott R. Waitukaitis. “Asymmetries in Triboelectric
    Charging: Generalizing Mosaic Models to Different-Material Samples and Sliding
    Contacts.” <i>Physical Review Materials</i>, vol. 7, no. 6, 065601, American Physical
    Society, 2023, doi:<a href="https://doi.org/10.1103/physrevmaterials.7.065601">10.1103/physrevmaterials.7.065601</a>.'
  short: G.M. Grosjean, S.R. Waitukaitis, Physical Review Materials 7 (2023).
date_created: 2023-07-07T12:48:01Z
date_published: 2023-06-13T00:00:00Z
date_updated: 2023-08-02T06:34:47Z
day: '13'
ddc:
- '537'
department:
- _id: ScWa
doi: 10.1103/physrevmaterials.7.065601
ec_funded: 1
external_id:
  arxiv:
  - '2304.12861'
  isi:
  - '001019565900002'
file:
- access_level: open_access
  checksum: 75584730d9cdd50eeccb4c52c509776d
  content_type: application/pdf
  creator: ggrosjea
  date_created: 2023-07-07T12:49:51Z
  date_updated: 2023-07-07T12:49:51Z
  file_id: '13198'
  file_name: Mosaic_asymmetries.pdf
  file_size: 1127040
  relation: main_file
  success: 1
file_date_updated: 2023-07-07T12:49:51Z
has_accepted_license: '1'
intvolume: '         7'
isi: 1
issue: '6'
keyword:
- Physics and Astronomy (miscellaneous)
- General Materials Science
language:
- iso: eng
month: '06'
oa: 1
oa_version: Submitted Version
project:
- _id: 0aa60e99-070f-11eb-9043-a6de6bdc3afa
  call_identifier: H2020
  grant_number: '949120'
  name: 'Tribocharge: a multi-scale approach to an enduring problem in physics'
- _id: 260C2330-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '754411'
  name: ISTplus - Postdoctoral Fellowships
publication: Physical Review Materials
publication_identifier:
  issn:
  - 2475-9953
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
status: public
title: 'Asymmetries in triboelectric charging: Generalizing mosaic models to different-material
  samples and sliding contacts'
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 7
year: '2023'
...
---
_id: '8101'
abstract:
- lang: eng
  text: By rigorously accounting for mesoscale spatial correlations in donor/acceptor
    surface properties, we develop a scale-spanning model for same-material tribocharging.
    We find that mesoscale correlations affect not only the magnitude of charge transfer
    but also the fluctuations—suppressing otherwise overwhelming charge-transfer variability
    that is not observed experimentally. We furthermore propose a generic theoretical
    mechanism by which the mesoscale features might emerge, which is qualitatively
    consistent with other proposals in the literature.
acknowledgement: "We would like to thank Philip Born, Bartosz Grzybowski, Tarik Baytekin,
  and Bilge Baytekin for helpful discussions.\r\nThis project has received funding
  from the European Unions Horizon 2020 research and innovation programme under the
  Marie Skłodowska-Curie Grant Agreement No. 754411."
article_number: '082602'
article_processing_charge: Yes
article_type: original
arxiv: 1
author:
- first_name: Galien M
  full_name: Grosjean, Galien M
  id: 0C5FDA4A-9CF6-11E9-8939-FF05E6697425
  last_name: Grosjean
  orcid: 0000-0001-5154-417X
- first_name: Sebastian
  full_name: Wald, Sebastian
  id: 133F200A-B015-11E9-AD41-0EDAE5697425
  last_name: Wald
- first_name: Juan Carlos A
  full_name: Sobarzo Ponce, Juan Carlos A
  id: 4B807D68-AE37-11E9-AC72-31CAE5697425
  last_name: Sobarzo Ponce
- first_name: Scott R
  full_name: Waitukaitis, Scott R
  id: 3A1FFC16-F248-11E8-B48F-1D18A9856A87
  last_name: Waitukaitis
  orcid: 0000-0002-2299-3176
citation:
  ama: Grosjean GM, Wald S, Sobarzo Ponce JCA, Waitukaitis SR. Quantitatively consistent
    scale-spanning model for same-material tribocharging. <i>Physical Review Materials</i>.
    2020;4(8). doi:<a href="https://doi.org/10.1103/PhysRevMaterials.4.082602">10.1103/PhysRevMaterials.4.082602</a>
  apa: Grosjean, G. M., Wald, S., Sobarzo Ponce, J. C. A., &#38; Waitukaitis, S. R.
    (2020). Quantitatively consistent scale-spanning model for same-material tribocharging.
    <i>Physical Review Materials</i>. American Physical Society. <a href="https://doi.org/10.1103/PhysRevMaterials.4.082602">https://doi.org/10.1103/PhysRevMaterials.4.082602</a>
  chicago: Grosjean, Galien M, Sebastian Wald, Juan Carlos A Sobarzo Ponce, and Scott
    R Waitukaitis. “Quantitatively Consistent Scale-Spanning Model for Same-Material
    Tribocharging.” <i>Physical Review Materials</i>. American Physical Society, 2020.
    <a href="https://doi.org/10.1103/PhysRevMaterials.4.082602">https://doi.org/10.1103/PhysRevMaterials.4.082602</a>.
  ieee: G. M. Grosjean, S. Wald, J. C. A. Sobarzo Ponce, and S. R. Waitukaitis, “Quantitatively
    consistent scale-spanning model for same-material tribocharging,” <i>Physical
    Review Materials</i>, vol. 4, no. 8. American Physical Society, 2020.
  ista: Grosjean GM, Wald S, Sobarzo Ponce JCA, Waitukaitis SR. 2020. Quantitatively
    consistent scale-spanning model for same-material tribocharging. Physical Review
    Materials. 4(8), 082602.
  mla: Grosjean, Galien M., et al. “Quantitatively Consistent Scale-Spanning Model
    for Same-Material Tribocharging.” <i>Physical Review Materials</i>, vol. 4, no.
    8, 082602, American Physical Society, 2020, doi:<a href="https://doi.org/10.1103/PhysRevMaterials.4.082602">10.1103/PhysRevMaterials.4.082602</a>.
  short: G.M. Grosjean, S. Wald, J.C.A. Sobarzo Ponce, S.R. Waitukaitis, Physical
    Review Materials 4 (2020).
date_created: 2020-07-07T11:33:54Z
date_published: 2020-08-17T00:00:00Z
date_updated: 2023-08-22T08:41:32Z
day: '17'
ddc:
- '530'
department:
- _id: ScWa
doi: 10.1103/PhysRevMaterials.4.082602
ec_funded: 1
external_id:
  arxiv:
  - '2006.07120'
  isi:
  - '000561897000001'
file:
- access_level: open_access
  checksum: 288fef1eeb6540c6344bb8f7c8159dc9
  content_type: application/pdf
  creator: ggrosjea
  date_created: 2020-08-17T15:54:20Z
  date_updated: 2020-08-17T15:54:20Z
  file_id: '8277'
  file_name: Grosjean2020.pdf
  file_size: 853753
  relation: main_file
  success: 1
file_date_updated: 2020-08-17T15:54:20Z
has_accepted_license: '1'
intvolume: '         4'
isi: 1
issue: '8'
keyword:
- electric charge
- tribocharging
- soft matter
- granular materials
- polymers
language:
- iso: eng
month: '08'
oa: 1
oa_version: Published Version
project:
- _id: 260C2330-B435-11E9-9278-68D0E5697425
  call_identifier: H2020
  grant_number: '754411'
  name: ISTplus - Postdoctoral Fellowships
publication: Physical Review Materials
publication_identifier:
  issn:
  - 2475-9953
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
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  - id: '12697'
    relation: popular_science
    status: public
scopus_import: '1'
status: public
title: Quantitatively consistent scale-spanning model for same-material tribocharging
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  short: CC BY (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
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...